2pcs ZTTO Bicycle Seat Post Conversion Sleeve Reducer Cover, 25.4-27.2mm 001, 27.2-28.6mm 003, 27.2-30.4mm 004, 27.2-30.8mm 005, 27.2-31.6mm 006, 27.2-33.9mm 007, 31.8-34.9mm 008, 30.9-31.6mm 009, 25.4-30.9mm 010, 25.4-31.6mm 011, 27.2-30mm 012...

1. Strong and durable, not easy to corrode, long service life
2. Made of aluminum alloy, lightweight and beautiful
3. Precision machining, can solve the problem that the size of your frame and seat tube does notmatch
4. Smooth edges, no burrs, would not hurt your car
5. Easy to install, practical and convenient to use
6. Various specifications are available to meet different needs
7. Length: 60mm
8. Please make sure the size of the product is suitable for your bike before purchase